Zhuge Liang: "A good general is one whose rigidity cannot be broken and whose softness cannot be rolled. Therefore, he uses weakness to control the strong and softness to control the hardness."

Laozi: No one in the world is softer than water. , and no one who attacks the strong can win, because it cannot be easily defeated. The weak overcomes the strong, the soft overcomes the strong, no one in the world knows it, and no one can do it. Therefore, the sage said: "If you accept the country's filth, you are called the master of the country; if you accept the country's misfortune, you are the king of the world."